Air-pump.



, Patented Mar. ll, I902. BMW. EDDY.

AIR PUMP.

{Application filed June 1, 1899 Runewed Jan. 27, 1902.)

2 Sheets Sheet I.

(No Model.)

Witmoco n4: NORRIS wz'rzns co. wowumo" WASNINGTON, n, c.

Patented Mar. u, I902.

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MR PUMP.

(Application filed June 1. 1899. Renewed Jan. 27,

2 Sheets-Sheet 2.

{No Model.)

ilniTTnn STaTns PATENT @rrrcn.

GEORGE EDDY, OF \VATERBURY, CONNECTICUT, ASSIGNOR TO THE SCOVILL MANUFACTURING COMPANY, OF \VATERBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

AHR- PUMP.

SPECIFICATION forming part of Letters Patent No. 695,199, dated March 1 1, 1902.

Application filed June I, 1899. Renewed January 27, 1902. Serial No. 91,468. (No model.)

To ctZZ whom it may concern;

Be it known that I, GEORGE W. EDDY, a

citizen of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented a certain new and useful Improvement in Air-Pumps, of which the following is a full, clear, and exact description.

This invention relates to those air-pumps which are designed for use chiefly in inflating the pneumatic tires of bicycle-wheels and which are commonly known as foot-pumps.

Certain foot-pumps are made with a discharge-tube projecting rigidly from the base of the barrel and adapted to engage the airvalve of a tire; but owing to the rigid charactor of the tubes themselvesand of the union of such tubes with the pump it is not always possible to preserve an air-tight union of the tube with such valve while operating the pump. Furthermore, the rigid tube extending laterally from the pump is not capable of compact packing for stowing and transporta-' tion purposes and also is liable to injury because of such projection.

The object of the present invention is to obviate the above-mentioned difficulties and to this end the invention consists in an inherently rigid discharge-tube yieldingly connected with the outlet of the pump-barrel in such manner that the union of such tube with the air-valve will not be harmfully afiected by the motion of the pump. The said discharge-tube also is made detachable or removable at pleasure, all as I will proceed now more fully to set forth and claim.

In the accompanying drawings, illustrating my invention, in the several figures of which like parts are similarly designated, Figure 1 is a side elevation with a portion of the stirrup and barrel broken away, showing one form of my invention. Fig. 2 is a longitudinal section of the discharge end of the pump, and Fig. 3 is a perspective View of the discharge-tube and its adjuncts. Fig. 4 is a side elevation with a portion of the stirrup and barrel broken away, showing another form of my invention. Fig. 5 is a longitudinal section of the discharge end of the pump, and Fig. 6 is a perspective view of the dischargetube members detached. Fig. 7 is a partial longitudinal section of another modification.

The pump-barrel a, piston I), piston-rod o, handle (I, stirrup e, foot-plate e, and cap f may be of any approved construction.

The discharge-tube g has a spout or socket g of any approved construction, whereby it is adapted for frictional or other air-tight engagement with the air-valve of an object to be in fiatedfor example, that of a pneumatic tire of a bicycle-wheel. In the form of the invention shown in Figs. 1 to 3 this tube is secured to a rectangular bracket 7t, one end of which is made with the notched laterallyextending lugs 72. to engage the sides of the stirrup, so as to anchor the discharge-tube pivotally to the pump, and its other end is made with the finger 77, to engage a slip ring or band i, which adjustably encircles the pump-barrel and may have the offset t" for the more convenient reception of the said finger, this finger having a certain amount of play in said ring or band. The inner end of the tube is provided with a perforated yielding or elastic cushion j, the perforation in which alines with the bore of the tube and the outlet 70 of the barrel. This cushion may be handed or wired to the tube or secured to the bracket or otherwise applied, so as to make an air-tight joint about the outlet and its connection with the discharge-tube. Since this form of pump is designed to be engaged with the air-valve as it stands up perpendicularly to the earth, and since the movement of the pump in working it imparts a jarringmotion to its parts, it is obvious that the cushion takes up or compensates for this jarring motion by permitting a relative movement between the pump-barrel and the discharge-tube without affecting the union of such tube with the air-valvethat is to say, without impairing the tightness of such union against leakage of air. It is to be noted that I) II in p the advantage of permitting the ready detachment of the discharge-tube for packing and transportation purposes, since it is obvious that by slipping the ring or band 2' upwardly along the barrel and off the finger 72, the bracket may be disconnected from the stirrup and the whole attachment removed.

In the modification, Figs. 4 to 6, the bracket is in the form of an arm Z, projecting longitudinally from the discharge tube and notched at Z to engage an eyepiece m, depending from the pump, and a transverse pin or key 07., passed through the arm outside of i the eyepiece, may be used to hold the tube in place. The cushion j may be secured to the discharge-tube as before or in any approved way.

As shown in Fig. 2, the outlet may be flanged inwardly, or, as shown in Fig. 5, said outlet may be flanged outwardly.

Instead of a lateral application of the selfconforming and removable discharge -tube there may be a bottom arrangement, such as illustrated in Fig. 7, where the parts are shown as under strain of use. The tube g may have the pivoting bracket 0 hooked into some portion ofor an attachment to thepump, and the discharge may be a tube 19, extending from the outlet into the tube 9 or reversely, and with a cushion or spring 0' interposed between the tube 9 and the outlet end.

I have shown the bracket 0 as hooked into an indentation s in the cap f; but other connections may be used.

The modifications shown in Figs. 4L to 7, like the form of invention shown in Figs. 1 to 3, are capable of yielding to the motion of the pump, so as not to disturb the character of the air-tight junction between the spout or coupling and the air-valve, and they are also capable of ready detachment for purposes of stowing and transportation.

In all of these modifications the dischargetube is made of inherently rigid material, such as metal.

The common discharge-tube, made of rubber tubing and having couplings at its ends for union with the pump-outlet and the airvalve, obviously is capable of yielding to the motion of the pump and of being detached from the pump for stowing and transportation purposes; but my invention differs from this prior construction in that the discharge-tube is itself rigid and also in that pressure in opcrating the pump is transmitted through this rigid discharge-tube to the coupling with the air-valve and tends to reinforce the junction of the discharge-tube with such air-valve, while the yielding connection of the discharge tube with the pump obviates any tendency of the motion of the pump to disturb suchjunction of the discharge-tube with the air-valve, and within these limits I do not restrict my invention to the several forms of yielding connection and of coupling or spout for union with the air-valve.

' What I claim is 1. An air-pump, having a discharge-tube of rigid material and provided with a coupling for connecting the same with the inlet of an object to be inflated, and a yielding and detachable joint betweenthe pump and the discharge-tube, substantially as described.

2. An air-pump, having a discharge-tube of inherently rigid material, an attached bracket adapted to be pivotally connected with the pump, and a cushion interposed between the said discharge-tube and the outlet of the pump, substantially as described.

3. An air-pump, having an inherently rigid discharge-tube provided with means for connecting the same with an inlet of an object to be inflated, a bracket affixed to the tube and adapted to be pivotally connected with the pump, and a cushion, of yielding air-tight material, interposed between the said tube and the outlet of the pump, the said dischargetube being thereby rendered capable of yield ing to the motion of the pump without disturbing its union with the said inlet and also being capable of ready detachment from the pump, substantially as described.

4. An air-pump, having a discharge-tube, a bracket attached thereto and having one end constructed to engage a fixed portion of the pump and the other end adapted to engage a movable member applied to the pump, and a yielding cushion interposed between the said discharge-tube and the outlet of the pump, substantially as described.

5. An air-pump, having a discharge-tube provided with a bracket, one end of which is notched to engage a fixed portion of the pump and the other end of which is constructed as a finger, a slip ring or band on the pumpbarrel With which the said finger engages, and a yielding cushion interposed between the said tube and the outlet of the pump, the said slip ring or band being adapted to be disengaged from the finger to permit the detachment of the discharge-tube, substantially as described.

In testimony whereof I have hereunto set my hand this 27th day of May, A. D. 1899.

GEORGE W'. EDDY.

Witnesses:

G. M. DE Mo'r'r, J I'I. PILLING. 

